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And then, the operating system interacts with the device driver.

It only interact with the Operating System (e.g, Windows). In this example, your browser (the application) is not directly interacting with the the hardware (e.g,Wireless LAN card). The page that you requested reaches your browser through a Wireless LAN (or Wired LAN) card (hardware). You would already know that when you run a browser (e.g, Google Chrome) and visit a site. To give you more concrete understanding, let me give you an example. Overal interaction between the application software and device driver can be illustrated as follows. Įven though a device driver is not visible to ordinary users, they are working in the background almost always when you are using a computer. This special software (or a set of software) is called a device driver. It requires special software that make those electronic circuit and mechanical components work work as intended. Usually those hardware would not work as expected just by electric power. Hardware is a combination of a bunch of electronic circuits and some mechanical components'. In most case, a device means a hardware components installed on your PC like HardDisk, Monitor, Keyboard, Wired Lan Card, WiFi Card etc. Let me rearrange the word and add a couple of words as follows.ĭevice Driver is 'Something that drives a device ' What is Device Driver ? Actually the meaning can be guessed from the word itself (i.e, it is self descriptive).